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China’s first "Kompogas" plant to be built in the world’s largest city

Dry fermentation specialists Switzerland-headed energy from waste technology provider Hitachi Zosen Inova (HZI) has announced that it is to supply two Kompogas digesters for a biogas plant project in Chongqing, China. The order marks the first delivery in China of this technology for HZI – a market that offers considerable potential.

The core module of the dry anaerobic digestion system is the two PF1500 Kompogas digesters (illustration courtesy HZI).

The core module of the dry anaerobic digestion system is the two PF1800 Kompogas digesters (illustration courtesy HZI).

The signing of the contract with German Bio Energy Technology (GBE), HZI’s local partner in China, to deliver two PF1800 Kompogas steel digesters for the biogas plant project in Chongqing, marks the first joint project for the companies. It also marks the successful entrance into the Chinese biogas market for the Swiss clean-tech company.

Covering an area of 82 400 km2 and with a population of just under 30 million, Chongqing, Sichuan Province is said to be the largest city in the world.

In China, the composition of mixed city waste is often unpredictable, which calls for a certain degree of solid technological experience in this field. Kompogas technology is the only one which can prove to fit this requirement, promising optimal biogas production. The decision to choose technology leader HZI was therefore taken at an early stage, explained Markus Dicke, CEO of German Bio Energy Technology.

The biogas plant will be constructed at a local waste disposal site, where the deliveries of household waste will first be sorted. The two digesters will then process up to 200 tonnes of the separated organic fraction every day, producing around 6.7 million Nm3 per annum of biogas and compost.

HZI grates for Chinese EfW plants

As a COP21 member country, China has made considerable efforts and investments in the area of sustainable environmental and waste management in recent years and has also been turning its focus recently to the recovery of energy from organic waste.

For us as an international company, this project is a key milestone in establishing a foothold in the highly competitive Chinese market. We are also proud of the contribution we are thus making to sustainable waste management in China, said Andres Kronenberg, Vice President Sales at HZI.

With regard to China’s environmental objectives, HZI is also making an important contribution in the area of thermal waste treatment. In collaboration with its local licensees and clients, the company has recently been able to install its proven reciprocating grates in major thermal energy-from-waste (EfW) plants, including three grates for the project in Changshu, a grate for the expansion of an existing facility in Yiwu, and a further grate system earlier this year in Jieyang.

Furthermore, according to HZI, additional contracts are “on the verge” of being signed for other thermal waste treatment projects, while the pipeline for the development and construction of further Kompogas projects is also “promising” at present.

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